(Bloomberg) – MTN Group is focused on laying the groundwork for an initial public offering of its Nigerian business and should complete the process in the next six months, Chief Executive Officer Rob Shuter said.

“We have a lot of advisers running around getting everything ready,” he said in an interview with Bloomberg TV on Wednesday. “It’s a complicated process and there’s a lot of regulation that needs to be arranged. We are moving forward well with the project and anticipate concluding that in the next six months or so.”

MTN CEO Rob Shuter

MTN agreed to the Lagos IPO as part of the settlement of a $1 billion fine imposed by Nigerian regulators on MTN in 2015. Africa’s biggest wireless operator by sales incurred the penalty after missing a deadline to disconnect unregistered subscribers amid a security crackdown in the west African country. Since then, the CEO said he’s been “pleased” with MTN’s operation in Nigeria, the biggest of the Johannesburg-based company’s 22 markets across Africa and the Middle East.

MTN’s two other main countries are Iran and South Africa. In the former, Shuter said the company isn’t “holding back” on expansion plans even as U.S. President Donald Trump objects to the terms of a nuclear deal that led to the lifting of economic sanctions last year. MTN has about 49.5 million customers in Iran, just under Nigeria’s 50.3 million., and has repatriated almost $1 billion from the country in the last 12 months.

“We are putting a lot of investment into the ground in Irancell,” Shuter said. “There is a huge demand for mobile data there, its one of our fastest growing data markets. It is business as usual.”

MTN has no immediate plans to expand into new countries, and is instead focused on improving operations in existing markets, which include conflict areas such as Afghanistan and South Sudan, according to the CEO.

The company needs to “build what we need to and get our networks into shape,” Shuter said. “In months to come I think there will be an opportunity to participate in the consolidation of the market.”

MTN shares rose 0.2 percent to 122.96 rand as of 10:53 a.m. in Johannesburg, valuing the company at 231 billion rand ($16.3 billion).